cut out the disc, and, radiating from the centre thereof, about midway from the margin, cut or stamp thirteen equidistant perforations; each an inch long, and about the sixteenth of an inch wide.
Pin the centre of the disc to a handle and revolve it in the direction of the arrow, at a distance of about twenty-four inches, in front of a mirror.
By looking through the upper series of perforations at the reflection of the lower series of figures, a semblance of the original movements of life will be seen.
The figures may be appropriately colored, and the back of the cardboard disc should be painted a dark color, or covered with a piece of dark surfaced paper before cutting the perforations.